Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
33115-1 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #5/16 CRIMP	1522
R150-12 JST	CONN RING CRIMP 250/300 AWG #1/2	373
0190750021 Woodhead - Molex	CONN RING CIRC 14-16AWG #8 CRIMP	0
76-RT12-3/8L NTE Electronics, Inc.	NON INS RING TERM 12-10WG 50 BAG	5
0190570011 Woodhead - Molex	CONN RING CIRC 18-22AWG #10	2400
61794-1 TE Connectivity AMP Connectors	CONN RING CIRC 14-18AWG #8 CRIMP	0
P14-38R-M Panduit Corporation	CONN RING CIRC 14-18AWG #3/8	677
42508-2 TE Connectivity AMP Connectors	CONN RING CIRC 20-24AWG #8 CRIMP	0
8202 Keystone Electronics Corp.	CONN RING CIRC 18-22AWG #10	3055400
0190690037 Woodhead - Molex	CONN RING CIRC 18-22AWG #10	126418000
PV4-14RX-T Panduit Corporation	CONN RING FLAT 4AWG #1/4 CRIMP	697600
P8-56R-T Panduit Corporation	CONN RING CIRC 8AWG #5/16 CRIMP	576
2-36160-1 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #10	9757
322310 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #14	0
696423-6 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #10	9025
0190540098 Woodhead - Molex	CONN RING CIRC 14-16AWG #5/16	0
10-4-WN 3M	CONN RING CIRC 24-26AWG #4 CRIMP	616
PV14-6RNB-3K Panduit Corporation	CONN RING CIRC 14-16AWG #6 CRIMP	542548000
P14-6R-M Panduit Corporation	CONN RING CIRC 14-18AWG #6 CRIMP	537
0191930073 Woodhead - Molex	CONN RING CIRC 14-16AWG #1/4	10000

Terminals - Ring Connectors

1. Overview

Ring connectors are cylindrical metallic terminals with a closed loop at one end, designed to establish secure electrical connections between wires and screw-type terminals. They prevent wire fraying and ensure stable contact in high-vibration environments. Critical for power transmission and signal integrity in industrial and automotive systems.

2. Main Types & Functional Classification

Type	Functional Features	Application Examples
Open Barrel Ring	Split design for easy wire insertion	Battery terminals, control panels
Closed Barrel Ring	360 compression for maximum conductivity	High-vibration machinery
Insulated Ring	Polymer coating for short-circuit prevention	Automotive electronics

3. Structure & Composition

Typical construction includes:

Copper alloy body (C11000/C14500) with tin/nickel plating
Insulation sleeve (PVC/nylon, 105 C rating)
Barrel section with 2-3 crimping zones for wire retention
Loop diameter tolerance 0.1mm for screw compatibility

4. Key Technical Specifications

Parameter	Typical Range	Importance
Ampacity	10-150A	Current carrying capacity
Contact Resistance	0.5-5m	Power loss prevention
Dielectric Strength	1kV-5kV	Insulation reliability
Vibration Resistance	15G @ 10Hz-2kHz	Automotive compliance

5. Application Fields

Primary industries:

Automotive (battery cables, alternator connections)
Industrial automation (PLC terminals, motor drives)
Renewable energy (solar charge controllers)
Aerospace (avionics grounding systems)

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
TE Connectivity	DT Ring Terminals	Corrosion-resistant alloy, 125A rating
Phoenix Contact	RTME Series	Push-in wire connection, 600V compliance
Sumitomo Electric	HR4H-S-DC5V	Automotive-grade tin-plated copper

7. Selection Guidelines

Key considerations:

Current/voltage requirements
Wire gauge compatibility (AWG 22-4/0)
Environmental factors (temperature, humidity, vibration)
UL/CSA certification for safety compliance
Color-coded insulation for circuit identification

8. Industry Trends

Emerging developments include:

Miniaturization for EV battery management systems
Graphene-enhanced plating for corrosion resistance
Smart connectors with integrated current sensing
Lead-free manufacturing processes (RoHS compliance)